12157597 has 2 divisors, whose sum is σ = 12157598. Its totient is φ = 12157596.

The previous prime is 12157577. The next prime is 12157627. The reversal of 12157597 is 79575121.

12157597 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10666756 + 1490841 = 3266^2 + 1221^2 .

It is a cyclic number.

It is not a de Polignac number, because 12157597 - 2⁷ = 12157469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12157577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6078798 + 6078799.

It is an arithmetic number, because the mean of its divisors is an integer number (6078799).

Almost surely, 2^12157597 is an apocalyptic number.

It is an amenable number.

12157597 is a deficient number, since it is larger than the sum of its proper divisors (1).

12157597 is an equidigital number, since it uses as much as digits as its factorization.

12157597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22050, while the sum is 37.

The square root of 12157597 is about 3486.7745840533. The cubic root of 12157597 is about 229.9407345725.

It can be divided in two parts, 12 and 157597, that added together give a square (157609 = 397²).

The spelling of 12157597 in words is "twelve million, one hundred fifty-seven thousand, five hundred ninety-seven".